Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: st: Poisson regression -not concave-


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Poisson regression -not concave-
Date   Mon, 7 Jun 2010 10:02:32 +0100

There's also a flavour of circular argument if the response is y and one of the predictors is (y > 0). 

Nick 
n.j.cox@durham.ac.uk 

Maarten buis

--- On Mon, 7/6/10, Paolina Medina wrote:
> I'm trying to run a poisson regression model in which the
> dependent variable is the number of mobile phones from the
> households, and among other explanatory variables i am
> using a dummy wariables which takes the value of 1 when
> the household has at least one cell phone and zero
> otherwise.

Sounds to me you want to do something like a -zip- rather
than a -poisson-, i.e. you want to handle the zero counts
differently from the other counts.


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index